Slide-trombone.



L. S. SHIELDS. SLIDE TROMBONE.

APPLICATION FILED MAY 17, 1910.

m. M v w a j; 45'. 1570mm TH E nonrus PETERS co., wAsnmcron, v.1:

Patented Mar. 28, 1911 LANDON S. SHIELDS, OF MARION, OHIO.

SLIDE-TROMBONE.

Specification of Letters Patent.

Application filed May 17, 1910.

Patented Mar. 28, 1911. Serial No. 561,862.

To all whom it may concern:

Be it known that I, LANDON S. SrnELns, citizen of the United States, residing at Marion, in the county of Marion and State of Ohio, have invented certain new and useful Improvements in Slide-Trombones, of which the following is a specification.

This invention comprehends certain new and useful improvements in brass wind instruments and relates particularly to slide trombones.

The invention has for its primary object a slide trombone, the parts of which are so constructed and arranged that a free air passage is provided from one end of the instrument to the other, all shoulders and olfsets being avoided.

ith this and other objects in view as will more fully appear as the description proceeds, the invention consists in certain constructions, arrangements and combinations of the parts that I shall hereinafter fully lescribe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings in which: the figure is a longitudinal sectional view of the invention.

Referring to the drawing, the numerals 1 and 2 designate the relatively stationary tube sections of the instrument connected together near one end by a transversely ex tending tube section 3 and provided with the usual stationary cups 4. The slide of the trombone embodies a tube section 5 conneeted at one end to the curved tube 6 and the latter in turn being connected to or forming part of the tube sect-ion 7 which extends parallel to the tube section 5 and which is arranged to telescope within the tube section 2. At the juncture of the tube sections 6 and 7, the same are provided with a cup 8 on the flange or rim of which a sleeve or tube 9 is secured or formed, the sleeve 9 surrounding and spaced from the tube section 7, preferably terminating short of such section, the section 2 of the relatively stationary portion of the trombone working between the concentric tube sections 7 and 9 as clearly illustrated in the drawing. At one limit of the movementof the slide, the tube section 2 will abut against the bottom of the cup 8 and the relatively free end of the section 9 will abut against the bottom of the adjacent cup 4;. It is to be particularly noted that the tube sections have a straight uniform bore, and that each of them is different in caliber from the others, except the sections 5, 6 and 7 which are of the same caliber. By this, means, it is clear, that a free air passage is produced.

In the present instance, the bell of the instrument is not shown ordescribed as it does not form any part of the present invention, being tapered in the usual manner.

One end of the tube section 1 is exteriorly enlarged, as indicated at 1', this enlarged portion extending to one end of the section and terminating short of the other end in an annular shoulder 1 and likewise the section 7 is formed with an exterior enlargement 7 terminating in an annular shoulder 7 By this means'oil bearings are produced opening in either direction and as they hold the slidable tubes in line with the stationary tubes, an easy running slide is produced.

From the foregoing description in connection with the accompanying drawings, it will be seen that I have provided a slide trombone so constructed and arranged that each time the air passes from one section of the instrument to another, it passes'into a slightly larger air passage, the double casing formed by the sections 7 and 9 serving to support the brace and handle bar 10 as well as to protect the inner parts from the accumulations of dust, while the inner tube 7 being the same caliber as the section 5, it conducts the air around through the slide without encountering any ofi-sets or shoul ders.

Having thus described the invention, what is claimed as new is:

1. A slide trombone, embodying relatively stationary parallel tube sections 1 and 2, the latter being of larger caliber than the former, parallel slide sections 5 and 7 of equal caliber one with the other connected at one end by a curved section of corresponding caliber, the section 5 telescoping outside of the section 1 and the section 7 telescoping within the section 2, and a tube section 9 surrounding and concentric to and spaced from the section 7 and connected thereto at one end, the said tube 9 sliding upon the outside of the tube section 2.

2. A slide trombone, embodying relatively stationary parallel tube sections 1 and 2, the latter being of larger caliber than the former, parallel slide sections 5 and 7 of equal caliber one with the other connected at one end by a curved section of corresponding caliber, the section 5 telescoping outside of tion 1 snugly fitting Within the section 5 10 the section 1 and the section '7 telescoping and the enlargement of the section 7 snugly Within the section 2, and a tube section 9 fitting Within the section 2.

surrounding and concentric to and spaced In testimony whereof I ntlix my signature from the section 7 and connected thereto at in presence of two Witnesses.

one end, the said tube 9 sliding upon the out- LANDON S. SHIELDS. [1 s.] side of the tube section 2, the sections 1 and lVitnesses:

7 being provided at one end With exterior E. P. DAWARD, enlargements, the enlargements of the sec J. H. EYMON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. washin ton, 1). C. 

